Traction may refer to: In engineering: Traction (engineering), adhesive friction or force in the context of vehicle propulsion Railway electric traction, the use of electric motors to propel rail cars Traction vector - the force per unit area (pressure) on a surface, including normal and shear components, given by the limit as A tends to zero of dF/dA - used in finite element analysis In general use a synonym for force. Also: Traction (orthopedics), the set of mechanisms for straightening… (More on Traction)